The demands for further improvement of efficiency of diesel engines for commercial vehicles result in developments which generally lead to lower rated engine speeds, higher torque and torque back-up values, and, in order to obtain higher mean vehicle velocities, to still higher power outputs. For fulfillment of these demands engines with large swept volumes were placed first till today. In the course of necessary reductions of weight also in order to obtain better economy, today and in future the trend is going to smaller engines, however, higher values of mean effective pressures, therefore highly rated engines will be demanded. The development work described hereinafter shows that it is possible to uprate an engine with a capacity of only 10 litres up to an output of 27o kW and mean effective pressures up to 17 bars and thereby to retain good fuel economy, torque characteristics, acceleration and smoke behaviour or even to improve the engine in relation to the present status in this respect. The development was carried out on the engine WD 615.65 of the STEYR-DAIMLER-PUCH AG, having the following main data 6 cylinders in line bore b = 126 mm; stroke s = 130 mm; swept volume VH = 9.73 l; rated power P = 206 kV at 2400 1 /min; maximum torque Mmax = 950 Nm at 1500 1 /min; compression ratio epsilon = 1 6 : 1; engine weight, dry W = 85o kg; turbocharged and aftercooled. The most essential steps of the development are described detailed in the paper.


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    Title :

    Development of a highly rated 10 litre diesel engine with combined charging


    Additional title:

    Erhöhung der spezifischen Leistung eines 10-l-Dieselmotors mit Turboaufladung


    Contributors:
    Lettner, K. (author) / Moser, F.X. (author) / Rammer, F. (author)


    Publication date :

    1983


    Size :

    18 Seiten, 13 Bilder, 7 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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